I don't think I'll be available much tomorrow before the first round, so here are my official guesses out of my ass. Keep in mind the Astros are being very tight lipped.
8. Stetson Allie
19. either Eibner, DeShields, or Austin Wilson depending on availability.
33. Paxton or Solis.
This isn't an official guess as much as it is my feelings/hope:
8. Deck McGuire -- The stros have been tight lipped. This kid has a high floor and should be able to help you soon. He also has pretty good stuff and a little bit of projection left. I saw him on TV and really like his downward plane as the fastball seems to have good life.
19. Allie, DeShields, Sale, Wilson -- I actually like these guys in that order. Though, I really like Wilson, but everyone seems to agree that he is a really tough sign.
33. Cabrera, Workman, Brentz -- I saw Cabrera play on television at some point, but I can't place it. He has tremendous tools. He could play a plus third, plus second, and all three outfield positions. High Risk and high reward type. Workman has been great all season for the Horns. I actually think he has a higher ceiling than McGuire, but he is going to needs some work. His command in the strikezone isn't great with the fastball, but the curve is dominant at his current level.
Later in the draft, I am really interested to see what happens with Zach Lee out of McKINNEY BOYD. Most have him pegged for LSU, but I wouldn't mind the Astros taking a flyer on him in the third. If he doesn't sign than you can get a pretty similar pick for him next year anyway.